The Irish passport numbers and expiry dates were valid but the names were wrong. The Irish people with the valid passports had not traveled to Israel, rather to Europe and the US. How did whoever forged these passports get the details? Passport numbers you can probably guess but valid expiry dates? I hope the Irish authorities are thoroughly investigating this breach of security and that they will get to the bottom of it eventually.
Report: Palestinian, 18, killed in clashes with IDF in West Bank (Haaretz)
from the article: Report: Australia already warned Israel against faking passports